I had arranged a trade for some moisture craving orchids and am going to try growing them in Nep pots. *My Neps pots are filled with a mix of LFS and sponge rock and the tops have been colonized by live sphagnum and club mosses. *It's a moist, but well drained place.
The orchids participating in my experiment are a Comparettia speciosa, Dockrillia pugioniformis, and Encyclia polybulbon. *The Comparettia is a twig epiphyte, so is probably least suited for the experiment. *But I think it'll appreciate the humidity boost. *The other two supposedly form mats on mossy trees and rocks, so should be thrilled. *I hope it works because I usually have trouble with orchids that demand moisture.